Hyperspectral Reflectance and Chemical Composition of Pre- and Post-Fire Soils from Three 2021 Western USA Megafires DOI Creative Commons

Yasaman Raeofy,

Vera Samburova, Markus Berli

et al.

Fire, Journal Year: 2023, Volume and Issue: 6(12), P. 471 - 471

Published: Dec. 16, 2023

Over the past two decades, wildfire activity in western USA has increased, especially California. Wildfires not only affect air quality but also environment at large, including chemical and physical properties of fire-affected soils, which are great interest for prediction mitigation hydrological consequences. Hyperspectral reflectance can be used to remotely assess effects fires on soil here we use it characterize soils before after three 2021 California wildfires (Dixie, Beckwourth Complex, Caldor fire). We acquired spectra compared changes these with chemistry analyzed soils. For all fires, results show that 700 nm wavelength ash samples collected 1 1.5 years fire decreased between 36% 76% right fires. Additionally, significantly higher visible been found unburned burned each region was studied. Infrared transmission measurements were carbonate content demonstrating a mostly positive relationship reflectance, indicating possible cause effect two.

Language: Английский

Impact of Forest Fire Severity on Soil Physical and Chemical Properties in Pine and Scrub Forests in High Andean Zones of Peru DOI Creative Commons

Heinz Gonzáles,

Candy Ocaña, Jefferson A. Cubas

et al.

Trees Forests and People, Journal Year: 2024, Volume and Issue: 18, P. 100659 - 100659

Published: Aug. 24, 2024

Language: Английский

Citations

4
Post-Wildfire Mobilization of Organic Carbon DOI Creative Commons

Travis Numan,

Srinidhi Lokesh,

Abrar Shahriar

et al.

Soil Systems, Journal Year: 2025, Volume and Issue: 9(1), P. 11 - 11

Published: Jan. 30, 2025

Wildfires significantly alter watershed functions, particularly the mobilization of organic carbon (OC). This study investigated OC mobility and physicochemical characteristics wildfire-impacted soils ashes from northern California Nevada fires (Dixie, Beckworth, Caldor). Organic in wildfire-derived (9.2–57.3 mg/g) generally exceeded levels background (4.3–24.4 mg/g), except at Dixie fire sites. The mobile fraction varied 0.0093 to 0.029 0.010 0.065 soils, though no consistent trend was observed between soils. Notably, ash samples displayed lower compared with beneath them. A negative correlation found bulk content. Wildfire increased total amount substantially by 5.2–574% Electron paramagnetic resonance (EPR) spectra confirmed presence environmentally persistent free radicals (EPFRs), which correlated redox reactivity. Additionally, X-ray absorption near edge structure (XANES) fluorescence (XRF) imaging revealed that Fe(II) oxidation may have enhanced mobility, likely driven pyrogenic radicals. These findings enhance our understanding post-wildfire impact ash–soil properties on health.

Language: Английский

Citations

0
Systematic Review of Post-Wildfire Landslides DOI Creative Commons
Stephen Akosah, Ivan Gratchev

GeoHazards, Journal Year: 2025, Volume and Issue: 6(1), P. 12 - 12

Published: March 3, 2025

This systematic literature review aims to studies on post-wildfire landslides. A thorough search of Web Science, Scopus, and other online library sources identified 1580 research publications from 2003 2024. Following PRISMA protocols, 75 met the inclusion criteria. The analysis revealed a growing interest in trends over past two decades, with most being 2021 study is divided into categories: (1) methods, (2) geographical distributions trends, (3) exploitation landslides terms susceptibility mapping, monitoring, mitigation, modeling, stability studies. that are primarily found terrains have experienced wildfires or bushfires immediately occur after rainfall rainstorm—primarily within 1–5 years—which can lead multiple forms destruction, including loss life infrastructure. Advanced technologies, high-resolution remote sensing machine learning models, been used map monitor landslides, providing some mitigation strategies prevent landslide risks areas affected by wildfires. highlights future prospects for outcome this expected enhance our understanding existing information.

Language: Английский

Citations

0
Post-fire reference densities for giant sequoia seedlings in a new era of high-severity wildfires DOI Creative Commons
Nathan L. Stephenson, Anthony C. Caprio, David N. Soderberg

et al.

Forest Ecology and Management, Journal Year: 2024, Volume and Issue: 562, P. 121916 - 121916

Published: April 26, 2024

Language: Английский

Citations

3
Mid-Term Effects of Fire on Soil Properties of North-East Mediterranean Ecosystems DOI Creative Commons
Panteleimon Xofis,

Peter Buckley,

George Kefalas

et al.

Fire, Journal Year: 2023, Volume and Issue: 6(9), P. 337 - 337

Published: Aug. 28, 2023

Fire is a fundamental ecological process with long history on Earth, determining the distribution of vegetation formations across globe. Fire, however, does not only affect but also soil which grows, creating post-fire environment that differs significantly in terms chemical and physical properties from pre-fire environment. The duration these alterations remains largely unknown depends both condition fire characteristics. In current study, we investigate effect some 11 years after event four plant communities. Two them constitute typical Mediterranean fire-prone communities, dominated by sclerophyllous shrubs, such as Quercus coccifera Q. ilex, while other two are considered prone deciduous broadleaved species petraea Castanea sativa, respectively. results indicate affects various communities different manner. Burned sites community have lower concentration organic matter, total nitrogen, available magnesium. At same time, they higher sand particles clay particles. three less dramatic, differences phosphorus, nitrogen. discussed relation to site conditions regeneration

Language: Английский

Citations

8
An Utilizing Marginal Red Yellow Podzolic Soil as a Growing Medium for Auxin-Soaked Cutting Propagation of Red Master Grapes (Vitis vinifera L) DOI Creative Commons
Saktiyono Sigit Tri Pamungkas, Yudhi Pramudya,

Fitria Nugraheni Sukmawati

et al.

Journal of Applied Agricultural Science and Technology, Journal Year: 2023, Volume and Issue: 7(4), P. 346 - 364

Published: Nov. 24, 2023

Grape (Vitis vinifera) cultivation is hampered by a lack of suitable land and challenging nurseries. Use crimson yellow podzolic soil for vine cuttings can be suboptimal. Although has low capacity to absorb macro- micronutrients an acidic pH, it nevertheless used as growing medium. A synthetic growth regulator (ZPT) bath naphthalene acetic acid (NAA) needs added the local red master grape variety, which started develop scion in In order assess impacts NAA-soaked concentrations on media identify morphological traits Red Master cuttings, this study set out these traits. Its goal was find how auxin affected development yield grapes vinifera L.) grown soil. non-factorial totally randomized design with one factor (NAA concentration) study, block 4 treatments 3 repetitions. The varied NAA treatment procedure included F0 (0 g L-1), F1 (2 F2 (4 F3 (6 L-1). variables that were observed number shoot bursts, timing leaf emergence, sheet leaves, length tendrils, proportion live cuttings. ANOVA tabulate analyze observational data at 5% level, DMRT analysis continue same level. According results, soaked concentration 0 L-1 (S0) control had best results variable shoots while 2 (S1) tendrils. However, no significant impact when leaves emerged. Soaking bottom effect formation. Reduction due defoliation result expression isopentenyl-transferase (IPT) gene. Auxins, such Indole-3-acetic (NAA), are usually involved regulation root growth. If plant many few roots without use additional or auxin, several factors may play role, genetics, environmental conditions, stress. explicitly affect leaves. survival percentage still because influenced quality (material) age parent tree, water availability.

Language: Английский

Citations

1
Accessing the Low-Polar Molecular Composition of Boreal and Arctic Peat-Burning Organic Aerosol via Thermal Analysis and Ultrahigh-Resolution Mass Spectrometry: Structural Motifs and Their Formation DOI
Eric Schneider, Anika Neumann, Martha L. Chacón-Patiño

et al.

Journal of the American Society for Mass Spectrometry, Journal Year: 2024, Volume and Issue: 35(8), P. 1713 - 1725

Published: July 1, 2024

Peatland fires emit organic carbon-rich particulate matter into the atmosphere. Boreal and Arctic peatlands are becoming more vulnerable to wildfires, resulting in a need for better understanding of emissions these special fires. Extractable, nonpolar, low-polar aerosol species emitted from laboratory-based boreal peat-burning experiments analyzed by direct-infusion atmospheric pressure photoionization (APPI) ultrahigh-resolution mass spectrometry (UHRMS) compared time-resolved APPI UHRMS evolved gas analysis thermal peat under inert nitrogen (pyrolysis) oxidative The chemical composition is characterized on molecular level, revealing abundant aromatic compounds that partially contain oxygen, nitrogen, or sulfur formed at characteristic temperatures. Two main structural motifs identified, single core multicore, their temperature-dependent formation assigned degradation lignocellulose building blocks other parts peat.

Language: Английский

Citations

0
Long-term effects of wildfires on river water quality: a comprehensive review of the variability of water quality in South Korea DOI Creative Commons
Changju Kim, Heechan Han

Journal of Water and Health, Journal Year: 2024, Volume and Issue: 22(11), P. 2146 - 2159

Published: Oct. 22, 2024

ABSTRACT After wildfires, the loss of humus layer leads to increased runoff and pollutants entering rivers. This study examined long-term effects wildfires on water quality. We statistically analyzed changes in quality streams surrounding wildfire area. used eight parameters provided by National Institute Environmental Research for analysis. To assess impact we employed t-tests point-biserial correlation analysis compare indicators before after wildfires. Additionally, an variance was conducted evaluate three each occurring different periods, a single river basin. The results showed increasing trends hydrogen ion concentration (pH), electrical conductivity, dissolved oxygen wildfire, whereas biochemical demand, total phosphorus, nitrogen exhibited decreasing trends. suspended solids relatively minimal. It is expected that this provide valuable insights into developing management restoration plans following

Language: Английский

Citations

0
Hyperspectral Reflectance and Chemical Composition of Pre- and Post-Fire Soils from Three 2021 Western USA Megafires DOI Creative Commons

Yasaman Raeofy,

Vera Samburova, Markus Berli

et al.

Fire, Journal Year: 2023, Volume and Issue: 6(12), P. 471 - 471

Published: Dec. 16, 2023

Over the past two decades, wildfire activity in western USA has increased, especially California. Wildfires not only affect air quality but also environment at large, including chemical and physical properties of fire-affected soils, which are great interest for prediction mitigation hydrological consequences. Hyperspectral reflectance can be used to remotely assess effects fires on soil here we use it characterize soils before after three 2021 California wildfires (Dixie, Beckwourth Complex, Caldor fire). We acquired spectra compared changes these with chemistry analyzed soils. For all fires, results show that 700 nm wavelength ash samples collected 1 1.5 years fire decreased between 36% 76% right fires. Additionally, significantly higher visible been found unburned burned each region was studied. Infrared transmission measurements were carbonate content demonstrating a mostly positive relationship reflectance, indicating possible cause effect two.

Language: Английский

Citations

0